What is the difference between DeepSeek V4 Flash 0731 and Mercury 2?

DeepSeek V4 Flash 0731 is developed by DeepSeek while Mercury 2 is developed by Inception. DeepSeek V4 Flash 0731 has a 1.0M token context window vs Mercury 2's 128K. You can compare their actual outputs across 42 challenges on Rival to see how they differ in practice.

Which is better, DeepSeek V4 Flash 0731 or Mercury 2?

It depends on your use case. DeepSeek V4 Flash 0731 and Mercury 2 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 42 challenges so you can judge which fits your needs best.

How much does DeepSeek V4 Flash 0731 cost compared to Mercury 2?

DeepSeek V4 Flash 0731 costs $0.14/M input tokens and Mercury 2 costs $0.25/M input tokens. DeepSeek V4 Flash 0731 is $0.11/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare DeepSeek V4 Flash 0731 and Mercury 2 on Rival?

This page shows a side-by-side comparison of DeepSeek V4 Flash 0731 and Mercury 2 across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

What is the difference between DeepSeek V4 Flash 0731 and Mercury 2?

DeepSeek V4 Flash 0731 is developed by DeepSeek while Mercury 2 is developed by Inception. DeepSeek V4 Flash 0731 has a 1.0M token context window vs Mercury 2's 128K. You can compare their actual outputs across 42 challenges on Rival to see how they differ in practice.

Which is better, DeepSeek V4 Flash 0731 or Mercury 2?

It depends on your use case. DeepSeek V4 Flash 0731 and Mercury 2 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 42 challenges so you can judge which fits your needs best.

How much does DeepSeek V4 Flash 0731 cost compared to Mercury 2?

DeepSeek V4 Flash 0731 costs $0.14/M input tokens and Mercury 2 costs $0.25/M input tokens. DeepSeek V4 Flash 0731 is $0.11/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare DeepSeek V4 Flash 0731 and Mercury 2 on Rival?

This page shows a side-by-side comparison of DeepSeek V4 Flash 0731 and Mercury 2 across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Updated Jul 2026

DeepSeek V4 Flash 0731vsMercury 2

DeepSeek V4 Flash 0731 is cheaper than Mercury 2 at $0.14/M vs $0.25/M input tokens.

DeepSeek V4 Flash 0731 and Mercury 2 compared across 42 shared prompts
Spec	DeepSeek V4 Flash 0731	Mercury 2
Input price	$0.14/M tokens	$0.25/M tokens
Output price	$0.28/M tokens	$0.75/M tokens
Context window	1.0M tokens	128K tokens
Released	Jul 2026	Mar 2026

Our Verdict

DeepSeek V4 Flash 0731

Mercury 2Runner-up

Not enough votes to call it. On the specs, DeepSeek V4 Flash 0731 has the edge: bigger model tier, newer, bigger context window, major provider backing.

Slight edge

What do DeepSeek V4 Flash 0731 and Mercury 2 say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

DeepSeek V4 Flash 0731

Input

$0.14

1.8× cheaper

Output

$0.28

2.7× cheaper

Mercury 2

Input

$0.25

Output

$0.75

DeepSeek V4 Flash 0731 is cheaper on both — 1.8× input, 2.7× output

Writing DNA

Style Comparison

Similarity

58%

Mercury 2 uses 8.2x more emoji

DeepSeek V4 Flash 0731

Mercury 2

52%Vocabulary53%

18wSentence Length22w

0.38Hedging0.40

5.7Bold6.6

3.4Lists2.6

0.00Emoji0.08

0.83Headings0.87

0.04Transitions0.14

Based on 23 + 23 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

DeepSeek V4 Flash 0731 vs MiniMax M3New provider

DeepSeek V4 Flash 0731 vs Ox AlphaNew provider

Mercury 2 vs MiniMax M2.7New provider

Mercury 2 vs Aurora AlphaNew provider

DeepSeek V4 Flash 0731 vs Pony AlphaNew provider

DeepSeek V4 Flash 0731 vs Quasar AlphaNew provider

DeepSeek V4 Flash 0731 vs Qwen Plus 0728New provider

DeepSeek V4 Flash 0731 vs Qwen Plus 0728 (thinking)New provider

Updated Jul 2026

DeepSeek V4 Flash 0731vsMercury 2

DeepSeek V4 Flash 0731 is cheaper than Mercury 2 at $0.14/M vs $0.25/M input tokens.

DeepSeek V4 Flash 0731 and Mercury 2 compared across 42 shared prompts
Spec	DeepSeek V4 Flash 0731	Mercury 2
Input price	$0.14/M tokens	$0.25/M tokens
Output price	$0.28/M tokens	$0.75/M tokens
Context window	1.0M tokens	128K tokens
Released	Jul 2026	Mar 2026

Our Verdict

DeepSeek V4 Flash 0731

Mercury 2Runner-up

Not enough votes to call it. On the specs, DeepSeek V4 Flash 0731 has the edge: bigger model tier, newer, bigger context window, major provider backing.

Slight edge

What do DeepSeek V4 Flash 0731 and Mercury 2 say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

DeepSeek V4 Flash 0731

Input

$0.14

1.8× cheaper

Output

$0.28

2.7× cheaper

Mercury 2

Input

$0.25

Output

$0.75

DeepSeek V4 Flash 0731 is cheaper on both — 1.8× input, 2.7× output

Writing DNA

Style Comparison

Similarity

58%

Mercury 2 uses 8.2x more emoji

DeepSeek V4 Flash 0731

Mercury 2

52%Vocabulary53%

18wSentence Length22w

0.38Hedging0.40

5.7Bold6.6

3.4Lists2.6

0.00Emoji0.08

0.83Headings0.87

0.04Transitions0.14

Based on 23 + 23 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

DeepSeek V4 Flash 0731 vs MiniMax M3New provider

DeepSeek V4 Flash 0731 vs Ox AlphaNew provider

Mercury 2 vs MiniMax M2.7New provider

Mercury 2 vs Aurora AlphaNew provider

DeepSeek V4 Flash 0731 vs Pony AlphaNew provider

DeepSeek V4 Flash 0731 vs Quasar AlphaNew provider

DeepSeek V4 Flash 0731 vs Qwen Plus 0728New provider

DeepSeek V4 Flash 0731 vs Qwen Plus 0728 (thinking)New provider